Air outlet direction switch for hair curler

WO2026188746A1PCT designated stage Publication Date: 2026-09-17
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Patent Information

Application Number
PCT/CN2025/119165
Authority / Receiving Office
WO · WO
Patent Type
Applications
Priority Date
2025-03-13
Filing Date
2025-09-05
Publication Date
2026-09-17

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Abstract

An air outlet direction switch for a hair curler, comprising a main body (1). A plurality of air outlet areas (2) are provided at intervals in the length direction of the main body (1); a plurality of air outlet channels (3) are provided at intervals in each air outlet area (2); each air outlet area (2) is covered with a rotatable direction-changing blade (4); and one end of the main body (1) is provided with a knob assembly (5) capable of simultaneously controlling the rotation of the plurality of direction-changing blades (4). By rotating the knob assembly (5), the rotation of the plurality of direction-changing blades (4) can be controlled, thereby changing the air outlet direction of the air outlet channels (3), and the main body (1) remains stationary. The air outlet direction switch can switch the air outlet direction without requiring a special structure of an outer cylinder working in conjunction therewith, and has a simpler structure.
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Description

A curling iron airflow direction switch Technical Field

[0001] This invention relates to the field of hair styling tools, and in particular to a hair curler air outlet direction switcher. Background Technology

[0002] Currently, in existing technologies, the direction of airflow change in curling irons is achieved by rotating the inner cylinder with a knob, which in turn changes the position of the seals on the inner cylinder. Technical issues

[0003] For example, the utility model patent with Chinese patent application number CN2023236663312 mainly uses a knob to drive the inner cylinder, causing it to rotate and switch the sealing element to a first position and a second position. When the sealing element is in the first position, the air outlet's airflow direction is counterclockwise, and when the sealing element is in the second position, the air outlet's airflow direction is clockwise. This airflow direction switching requires the cooperation of the outer cylinder's airflow structure to achieve the airflow direction switching. For example, it is necessary to set an extension plate and an arc-shaped sidewall on the outer cylinder for air guidance, which complicates the structure of the curling iron using this airflow switching structure and increases manufacturing costs. Technical solutions

[0004] To overcome the shortcomings and deficiencies of existing technologies, the present invention aims to provide an airflow direction switch for a hair curler. This invention achieves the rotation and oscillation of six reversing blades on the outer side of the main body by rotating the top cover, thereby changing the airflow direction.

[0005] The objective of this invention is achieved through the following technical solution: a hair curler airflow direction switcher, comprising a main body, wherein multiple airflow areas are spaced apart along the length of the main body, and multiple airflow channels are spaced apart within each airflow area. Each airflow area is covered with a rotatable reversing blade. One end of the main body is provided with a knob assembly capable of simultaneously controlling the rotation of multiple reversing blades. By rotating the knob assembly, the rotation of multiple reversing blades can be controlled, thereby changing the airflow direction of the airflow channels. The main body remains stationary. This airflow direction switcher does not require a special structure of the outer cylinder to achieve airflow direction switching, resulting in a simpler structure.

[0006] As an improvement to the airflow direction switch of the curling iron of the present invention, the knob assembly includes a knob cover and a turntable. One end of the knob cover has a turntable mounting groove, and a protrusion is provided on the inner side wall of the turntable mounting groove. The edge of the turntable has a retaining groove, which cooperates with the protrusion. The bottom of the turntable mounting groove has an alignment groove, and one side of the turntable has a limiting protrusion, which cooperates with the alignment groove. When the knob cover is rotated, the turntable rotates along with the knob cover. When the turntable rotates, multiple reversing blades swing with the rotation of the turntable. When the reversing blades swing, the horizontal reversing blades become tilted. One side of the tilted reversing blade is closed to the airflow channel, while the other side is open.

[0007] As an improvement of the air outlet direction switch of the hair curler of the present invention, the limiting protrusion is provided with a mounting hole, the mounting hole is provided with a gear spring and a gear ball, the gear ball is fixed to one end of the gear spring, and part of the gear ball is exposed outside the mounting hole.

[0008] As an improvement to the air outlet direction switch of the hair curler of the present invention, the turntable is provided with a plurality of connecting holes at intervals, the plurality of connecting holes are arranged in a circle, and one end of each reversing blade passes through one of the connecting holes.

[0009] As an improvement to the air outlet direction switch of the curling iron of the present invention, the main body is provided with a gear protrusion at one end where the knob assembly is installed. The gear protrusion is provided with a first gear groove and a second gear groove. When the gear ball is located in the first gear groove, the air outlet direction of the air outlet channel is clockwise. When the gear ball is located in the second gear groove, the air outlet direction of the air outlet channel is counterclockwise.

[0010] As an improvement to the airflow direction switch of the curling iron of the present invention, a connecting stud is provided in the middle of one end of the main body where the knob assembly is installed.

[0011] As an improvement to the air outlet direction switch of the curling iron of the present invention, the other end of the knob cover is provided with a screw hole, the center of the turntable is provided with a through hole, the connecting stud is inserted through the through hole, the fixing screw is inserted through the screw hole and screwed to the connecting stud, and after the fixing screw is screwed to the connecting stud, the screw hole is covered with a screw cap.

[0012] As an improvement of the air outlet direction switch of the hair curler of the present invention, one end of the reversing blade is provided with a connecting seat, the connecting seat is provided with a connecting post, the inner side of the reversing blade is provided with a plurality of positioning seats at intervals, each positioning seat is provided with a positioning post, and the connecting post passes through the connecting hole.

[0013] As an improvement to the air outlet direction switch of the curling iron of the present invention, a partition is provided between every two air outlet channels, and a positioning groove is provided on the inner side of each partition. The positioning groove is C-shaped, and each positioning post corresponds to one positioning groove.

[0014] As an improvement to the air outlet direction switch of the curling iron of the present invention, a plurality of protruding holes are provided at intervals on one end edge of the main body where the knob assembly is installed, and the connecting post passes through the protruding holes and is connected in the connecting holes. Beneficial effects

[0015] The beneficial effects of this invention are as follows: This invention allows control of the rotation of multiple reversing blades by rotating a knob assembly, thereby changing the airflow direction of the air outlet channel. The main body remains stationary. This airflow switcher does not require a special outer cylinder structure to achieve airflow direction switching, resulting in a simpler structure. This invention allows for free switching of the airflow direction, enabling bidirectional curling, improving the convenience of the curling iron, and enhancing the curling effect. Attached Figure Description

[0016] Figure 1 is a perspective view of the present invention;

[0017] Figure 2 is an exploded view of the present invention;

[0018] Figure 3 is an exploded isometric view of the present invention;

[0019] Figure 4 is a structural diagram of the commutation blade of the present invention;

[0020] Figure 5 is a schematic diagram of the knob cover structure of the present invention;

[0021] Figure 6 is a schematic diagram of the knob assembly structure of the present invention;

[0022] The attached diagram is labeled as follows: 1. Main body, 2. Air outlet area, 3. Air outlet duct, 4. Reversing blade, 5. Knob assembly, 6. Gear spring, 7. Gear ball, 8. Screw hole, 9. Through hole, 10. Fixing screw, 11. Gear protrusion, 12. First gear groove, 13. Second gear groove, 14. Connecting stud, 15. Screw cap, 16. Protruding hole, 31. Sloping surface, 32. Partition plate, 33. Positioning groove, 41. Connecting seat, 42. Connecting post, 43. Positioning seat, 44. Positioning post, 51. Knob cover, 52. Turntable, 53. Turntable mounting groove, 54. Protrusion, 55. Slot, 56. Alignment groove, 57. Limiting protrusion, 58. Mounting hole, 59. Connecting hole. Embodiments of the present invention

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0026] As shown in Figures 1-6, a hair curler airflow direction switch includes a main body 1, which is a hollow cylindrical shape. Multiple airflow areas 2 are spaced apart along the length of the main body 1. Each airflow area 2 contains multiple airflow channels 3, and each airflow channel 3 has a sloping surface 31 on both sides. Each airflow area 2 is covered with a rotatable reversing blade 4. One end of the main body 1 has a knob assembly 5 that can simultaneously control the rotation of multiple reversing blades 4. By rotating the knob assembly 5, the rotation of the multiple reversing blades 4 can be controlled, thereby changing the airflow direction of the airflow channels 3. The main body 1 remains stationary. This airflow direction switch does not require a special outer cylinder structure to achieve airflow direction switching, resulting in a simpler structure.

[0027] Preferably, the knob assembly 5 includes a knob cover 51 and a turntable 52. One end of the knob cover 51 has a turntable mounting groove 53, and a protrusion 54 is provided on the inner side wall of the turntable mounting groove 53. The edge of the turntable 52 has a retaining groove 55, which cooperates with the protrusion 54. The bottom of the turntable mounting groove 53 has an alignment groove 56, and one side of the turntable 52 has a limiting protrusion 57, which cooperates with the alignment groove 56. When the knob cover 51 is rotated, the turntable 52 will rotate together with the knob cover 51. When the turntable 52 rotates, multiple reversing blades 4 will swing along with the rotation of the turntable 52. When the reversing blades 4 swing, the horizontal reversing blades 4 will be tilted. One side of the tilted reversing blades 4 is closed with the air outlet duct 3, and the other side is open.

[0028] Preferably, the limiting protrusion 57 has a mounting hole 58, and the mounting hole 58 has a gear spring 6 and a gear ball 7. The gear ball 7 is fixed to one end of the gear spring 6, and part of the gear ball 7 is exposed outside the mounting hole 58.

[0029] Preferably, the turntable 52 is provided with a plurality of connection holes 59 at intervals, the plurality of connection holes 59 are arranged in a circle, and one end of each reversing blade 4 is inserted into a connection hole 59.

[0030] Preferably, one end of the main body 1 that mounts the knob assembly 5 is provided with a gear shift protrusion 11. The gear shift protrusion 11 is provided with a first gear shift groove 12 and a second gear shift groove 13. When the gear shift ball 7 is located in the first gear shift groove 12, the air outlet direction of the air outlet channel 3 is clockwise. When the gear shift ball 7 is located in the second gear shift groove 13, the air outlet direction of the air outlet channel 3 is counterclockwise.

[0031] Preferably, a connecting stud 14 is provided at the middle of one end of the main body 1 where the knob assembly 5 is mounted. The connecting stud 14 is used to cooperate with the fixing screw 10 described later, so that the knob assembly 5 can rotate without detaching from the main body 1.

[0032] Preferably, the other end of the knob cover 51 has a screw hole 8, and the center of the turntable 52 has a through hole 9. The connecting stud 14 passes through the through hole 9, and the fixing screw 10 passes through the screw hole 8 and is screwed to the connecting stud 14. After the fixing screw 10 is screwed to the connecting stud 14, the screw hole 8 is covered by a screw cap 15. The screwing of the fixing screw 10 to the connecting stud 14 does not restrict the rotation of the knob cover 51.

[0033] Preferably, one end of the reversing blade 4 is provided with a connecting seat 41, the connecting seat 41 is provided with a connecting post 42, the inner side of the reversing blade 4 is provided with a plurality of positioning seats 43 at intervals, each positioning seat 43 is provided with a positioning post 44, and the connecting post 42 passes through the connecting hole 59.

[0034] Preferably, a partition 32 is provided between every two air outlet channels 3, and a positioning groove 33 is provided on the inner side of each partition 32. The positioning groove 33 is C-shaped, and each positioning post 44 corresponds to a positioning groove 33 that is inserted into.

[0035] Preferably, the main body 1 has a plurality of protruding holes 16 spaced apart on one end edge of the knob assembly 5, and the connecting post 42 passes through the protruding hole 16 and is connected in the connecting hole 59.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and structure of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hair curler air outlet direction switcher, characterized in that, The device includes a main body, which has multiple air outlet areas spaced apart along its length. Each air outlet area has multiple air outlet channels spaced apart. Each air outlet area is covered with a rotatable reversing blade. One end of the main body is provided with a knob assembly that can simultaneously control the rotation of multiple reversing blades.

2. The air outlet direction switch for the curling iron according to claim 1, characterized in that, The knob assembly includes a knob cover and a turntable. One end of the knob cover has a turntable mounting groove. A protrusion is provided on the inner side wall of the turntable mounting groove. The edge of the turntable has a slot that engages with the protrusion. The bottom of the turntable mounting groove has an alignment groove. One side of the turntable has a limiting protrusion that engages with the alignment groove.

3. The air outlet direction switch for the curling iron according to claim 2, characterized in that, The limiting protrusion has a mounting hole, and a gear spring and a gear ball are installed in the mounting hole. The gear ball is fixed to one end of the gear spring, and part of the gear ball is exposed outside the mounting hole.

4. The air outlet direction switch for the curling iron according to claim 3, characterized in that, The turntable is provided with a plurality of connection holes spaced apart, and the plurality of connection holes are arranged in a circle, with one end of each reversing blade passing through one of the connection holes.

5. The air outlet direction switch for the curling iron according to claim 3, characterized in that, The main body has a gear shift protrusion at one end where the knob assembly is installed. The gear shift protrusion has a first gear shift groove and a second gear shift groove. When the gear shift ball is located in the first gear shift groove, the air outlet direction of the air outlet channel is clockwise. When the gear shift ball is located in the second gear shift groove, the air outlet direction of the air outlet channel is counterclockwise.

6. The air outlet direction switch for the curling iron according to claim 1, characterized in that, A connecting stud is provided at the middle of one end of the main body where the knob assembly is installed.

7. The air outlet direction switch for the curling iron according to claim 6, characterized in that, The other end of the knob cover is provided with a screw hole, and the center of the turntable is provided with a through hole. The connecting stud passes through the through hole, and the fixing screw passes through the screw hole and is screwed to the connecting stud. After the fixing screw is screwed to the connecting stud, a screw cap is used to cover the screw hole.

8. The air outlet direction switch for the curling iron according to claim 4, characterized in that, One end of the commutator blade is provided with a connecting seat, and the connecting seat is provided with a connecting post. Multiple positioning seats are provided at intervals on the inner side of the commutator blade, and each positioning seat is provided with a positioning post. The connecting post passes through the connecting hole.

9. The air outlet direction switch for the curling iron according to claim 8, characterized in that, A partition is provided between every two air outlet channels, and a positioning groove is provided on the inner side of each partition. The positioning groove is C-shaped, and each positioning post is inserted into a corresponding positioning groove.

10. The air outlet direction switch for the curling iron according to claim 8, characterized in that, The main body has multiple protruding holes spaced apart on one end edge where the knob assembly is mounted. The connecting post passes through the protruding holes and is connected to the connecting holes.